fix ByVertice handling of UVs and colors in FBX importer
fix ByVertice handling of UVs and colors in FBX importer

lsalzman/iqm,lsalzman/iqm,lsalzman/iqm,underscorediscovery/iqm,underscorediscovery/iqm,underscorediscovery/iqm